why don't output in 3rd row , 2nd colum be 8 , fomr 1 + 5 + 2
explain me about this problem please.

Sample Input
5 5
0 0 2 0 2
0 0 0 0 0
0 0 0 0 0
0 0 0 5 0
1 0 0 4 0
Sample Output
2 2 -1 2 -1
3 2 2 7 2
1 7 7 5 7
1 5 5 -1 5
-1 1 4 -1 4